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0 item @ $0.00  

Mcallisterite

#PD47355

Mcallisterite

#PD47355
Availability
Sold
Size
5 x 3 x 2 cm - Miniature 
Formula
Mg2[B6O7(OH)6]2·9H2O (RRUFF)
Locality
Sterling Hill mine, Ogdensburg, Sussex Co., New Jersey, United States

White crystalline areas in Franklinite. It's been cut on two sides and probably tested by Excalibur for which there is a label.

Mcallisterite

Formula
Mg2[B6O7(OH)6]2·9H2
Crystal System
Trigonal 
Cleavage
Good, Good, None 
Luster
Vitreous (Glassy) 
Color
colorless, yellow brown, white 
Streak
white 
Class
Trigonal - Hexagonal Scalenohedral 
Fracture
Brittle 
Hardness
2.5 

Data courtesy of Webmineral.

Collection
Phillips Collection

Other Sold

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